Stop motion for twister frames



' I July 14, 1942.

1 sToP MOTION FOR A TWISTER} FRAME Filed 05; 11, v1940 4 Sheets-Sheet 1 A TTORNEYS.

Jul 14, .1942.

H. w. TAYLOR 2,289,602 STOP MOTION FOR A TWI STER FRAME Filed Dec. -11,' 1940 4 Sheets-She et 2 INVENTOR.

. A TTORNEYS.

July '14, 1942.

I STOP MOTION F OR A TWIS-TER FRAME .Filed Dec. 11, 1940 4 'Sheets-Sheet 3 Y mmvrozu H wa/d A TTORNEYS.

w. TAYLOR I 2,289,602 I July 14, 1942.1 H. w TAYLOR 1 2,2 9,602

STOP MOTION FOR A TWISTER FRAME Filed Dc. 11-, 1940. 4 Sheets- Sheet 4 INVEN TOR.

ATTORNEYS.

, 7 ay/a/ Patented July 14, 1942 FOR TWISTER FRAMES Westerly, It. 1., assignor to e Company, a corporation of s'ror Morrow Howard W. Taylor, Atwood Maehin Connecticut Application December 11, 1940, Serial No. 369,628

'1 Claims. (Cl. 242-36) This invention relates such as may be used for like, more particularly to a stop motion to arrest the rotation of'the delivery package upon breaking of the yarn which is wound on the package.

One of the objects ofthis invention isto prevent the surface driving ,drum for the package engaging and driving the package when the supply of yarn to the package ceases.

Another object of the invention is to provide a stop motion for a headless package which will be of extremely simple construction and will be located adjacent the package and driving roll.

Another object of the invention is to so stop the package that the twist of the yarn at the pieced-up ends may be held in the desired relato a twisting machine,

' tionship.

Anotherobject of the invention is an arrangement whereby desired balance of the stop motion may be had for the action thereof upon breaking of the-yam.

With these and other objects in view, the invention consists of certain novel features of construction, as will-be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings:

Fig. 1 is an end view of a fragmental portion of a twister with parts partly in section, illustrating the stop motionin its relationship to one of the packaging units of the machine and with other portions of the machine removed;

silk, rayon, Nylon or the porting frame of the mechanism shown in Figs.

partly in section, of a of the stop mecha- 4 the package and its surface driving drum. In

r by the traveling order to accomplish this, I provide a pivoted.

member controlled by'an arm which is supported yarn. when this yam ceases. the arm will move and the member will respond by causing movement of a part to insert a wedge between the driving drum and the package to remove the contact 01' the driving drum with the package; and the following is a more detailed description of the present embodiment of this invention, illustrating the preferred means by which these advantageous results may be accomplished Fig. 2 is an end view of the parts, partly in section, illustrating merely the stop motion mechanism as moved to a position to space the delivery package from this driving drum: f

. Fig. 3 is a top plan view of the structure shown in Fig. I with many of theusual working parts of the machine omitted but illustrating the stop motion mechanism complete;

Fig. 4' is a diagrammatic view looking at the end of the package and its driving roll with parts of the frame in section and most of the frame omitted g f Fig. 5 is a view similar to Fig. 4, illustrating the stop motion as having been moved to space the package from the driving roll;

Fig. 6 is aifragmental view in front elevation, illustrating the mechanism as shown in Fig. 5;

Fig. '7 is a view similar to Figs. 4 and 5, with more of the mechanism omitted, and showing the stop motion fragmentally, but illustrating the locking device for-holding the stop motion inoperative;

Fig. 8 is a perspective view of the wedge supwith reference to the drawings, more particularly to the modification shown in Figs. 1 to 3 inclusive, l5 designates an upright support of the twister frame which has supporting arms ll extending on either side thereof with angle irons i1 extending longitudinally of the length of the frame. Bars it are also mounted upon the upright supports l5,'and from these bars there are hung brackets is by means'of cap members 2| clamped to the rodsll by means of bolts 2|. Each of these brackets is provided with U-shaped bearings 22 for supporting the shafts 23 upon which the driving drums 24, which are cork covered as at 25, are located atintervals along each side of'the machine.

The caps I! have laterally extending over arms 26 which are provided withbearing surfaces 21 to be engaged by the arbors 28 of the delivery package I! and also are provided with u-shaped bearings 30 for the reception of these arbors 28 to lodge the package away from the driving drum after it is completed. The supply spindle ll has a package 32 thereon from which the yarn 33 to be packaged is thrown and drawn through a tension device 34, suitably supported from the angle irons l1, and thence upwardly over a guide .rod 35 and through a pig-tail guide 36 carried by the arm 31 on the traverse bar 38 and thence to the delivery package 29 to be -wound by its frictional ating member 4| is pivoted by means of the headed screw 42 which extends into the supporting stand 40 and which may be held in various positions of adjustment by reason of the slot 43 in the stand. The arm 4| branches outwardly (see Fig. 6) to provide a spaced or bifurcated support having bearing ends 44 for the frame 45 which extends at either side of the driving drum 24 and has hingedly mounted at its end distant from its support 44 awedge plate 46 which rests upon the driving drum 24 and is additionally supported by a finger 41 which is attached to and carried by the plate 46 and rests upon the bars It. The lower portion 48 of the member 4| has a clamp 49 to receive the feeler arm 50 which has a loop through which the yarn 33 passes to have running engagement therewith. The yarn in its running engagement through the loop supports this am 50 in the positionillustrated in Fig. 1. The weight of the various parts described is such as to provide a balance so that, should the yarn 33 break. the arm 50 will drop from the position shown in Fig. 1 to the position shown in Fig, 2 and thus by rocking the member 4| will move the wedge 36 between the yarn package 29 and the driving drum24 to lift the yarn package 29 from contact with the drum and thus prevent there being formed a shiny surface or surfaces of different appearance on the package because of more contact with a portion of the package without the supply of additional yarn thereto. The rotation of the drum 24 will be in a direction to assist in moving the wedge plate between the yarn package and the drum so that but very little weight or overbalance in the stop motion structure will be necessary.

In the modification shown in Figs. 4 to '7, the parts of the framework of the machine heretofore described are numbered the same. The mounting member 40 and the member 4| will be the same as described in connection with Figs. 1 to 3. Likewise, the frame 45, wedge 56, and the supporting finger 41 will be the same; but instead of utilizing the contact arm 50, I have provided an arm 65 which will be clamped in the portion 49 of the member 4| and will extend outwardly therefrom and then at right angles to provide a broad engaging end lengthwise of the twister frame and will engage the yarn 33 between the tension 34 and the guide bar 35. In

this modification, however, there is provided a rod 61 extending lengthwise of the machine upon which there is mounted an L-shaped arm 68 adjustable by means of set screw 69 which may be swung into engagement with the member 4| by handle secured by set screw H on red 61. This in effect provides a crank 68 for engagement with each of the stop motion devices 4| so that when swung from the full line position of Fig. 4 to the dotted line position of Fig. 4, or to the full line position of Fig. 8, the stop motion will be effectively blocked from operation which may be desirable at the time of stopping or starting the machine at the beginning or end of the day.

The modification shown in Figs. 9 and 10 is applied to the same drive drum 24 and package 29 as heretofore described, but in this case the mounting stand is designated 15, and a member 'nected to loop formations 16 is pivoted as at TI on this stand. In this case, a clamp 18 supports the arm 19 against which the yarn 33 engages in its travel from tension 34 to and over a guide bar 35 to the package. This member 16 carries a frame having arms 80 straddling the drive r011 24 and con- 83 of a'second frame 82 having U formations 8| bent to embrace the shaft 23 upon which the drum is mounted and thus support one edge of the wedge member 84 whose other edge rests upon the driving drum 24., If the yarn breaks, the member 19. through which it extends and which is supported by the yarn swings forwardly to, by reason of the link frame 80, draw the wedge forwardly by swinging the members 82 which carry the member 84, assisted by the rotation of the driving drum, into the position between the package 29 and the drum 24 to raise the package out of driving engagement with the drum and thus arrest its rotation. In each case where the wedge enters between the package and the driving drum to arrest rotation of the drum, the wedge so locks the packaged yarn that untwisting is prevented.

I claim:

1. The combination of a frame for supporting a driving drum, a stationary support, a yarn package movable on said support and normally rotated by frictional contact with said drum, a supply of yarn guided to said package, a member mounted for rocking movement upon a fixed part of the frame, an arm carried at one end by said member and supported by running contact of the yarn with the arm, and means connected to said member and extending to a position on the other side of the driving drum from the said arm and carrying a wedge for insertion between said drum and yarn package, said arm and member being so balanced that upon breaking of the yarn to remove the yarn support from the arm, the arm will move and the member will swing to cause movement of the wedge between the drum and package to stop rotation of the package, and means manuallyoperable to engage and lock the said member against movement.

2. In a twisting frame, a plurality of yarn packages, driving drums, one for each of the yarn packages and normally rotating the package by frictional surface contact between the package-and said drum, supplies of yarn each guided to one of said packages, a stop motion for each package along the length of the frame comprising a member mounted for rocking movement upon a fixed part of the frame, an arm carried at one end by said member and supported by running contact of the yarn with the arm, means connected to said member and extending to a-position on the other side of the driving drum from the said am and carrying a wedge for insertion between said drum and yarn package, said arm and member being so balanced that upon breaking of the yarn to remove the yam support from the arm, the arm will move and the member will swing to cause movement of the wedge between the drum and package to stop rotation of the package, a rod extending the length of the frame common to all 'of said stop motions for the drums and packages along one side of the frame and provided at spaced intervals at the location of said stop motions with arms movable into engagement with said member to lock the same against movement,

and means to move the rod to simultaneously lock all of said stop motions in inactive position. 3. The combination of a structure for supporting a driving drum, a stationary support, a

yarn package movable on said support and normallyrotated by frictional contact with said drum, a supply of yarn guided to said package,

a member mounted for rocking movement upon a fixed part of the frame of the machine, an arm carried at one end by said member and supported by running contact of theyarn with the arm, a frame connected at one end to said memher and with the free end extending to a position on theother side' of the driving drum from the said arm and carrying a sheet metal'wedge movable into frictional engagement with the drum and package at the bite thereof and in the direction of rotation thereof for insertion between said drum and yarn package, said arm and member being so balanced thatupon. breaking of the yarn to remov the yarn support from the arm, the arm will move and the member will swing to cause movement of the frame to move the wedge towards and into frictional engagement with the drum and the package to be drawn into the bite thereof by rotation of the drum and package and separate the same to stop rotation of the package, and a lip carried by said wedge to engage a portion of the frame of the machine and 1 support the free end of the wedge-carrying portion of said frame in proper position. I

4. The combination of a frame for supporting a driving drum, a stationary support, a yarn package movable on said support and normally rotated by frictional contact with said drum, a

supply of yarn guided to said package, a member mounted for rocking movement upon a fixed part of the frame having arms pivotally fixed thereto and extending therefrom ,on either side of said during drum and carrying a wedge at the free ends thereof movable into frictional engagementwith the drum and package at the bite thereof and in the direction of rotation thereof, for insertionbetween said drum and yarn package, an arm carried at one end by said member and supported by running contact of the yarn with the arm, said" arm and member being so balanced that upon breaking of the yarn to remove the yarn support from the arm, the arm will move and the member will swing to cause movement of the wedge into frictional engagement with the drum and package to be drawn into the bite thereof by the rotation of the drum and package and separate the same to stop rotation of the package, and means carried by said wedge to engage a portion of said frame and support the free ends of said first mentioned arms in proper position.

, 5. The combination of a machine having a driving drum, a stationary support, a yarn pack- "age movable on said support and normally rotated .by frictional'contact with said drum, a supply of yarn guided to said package, a mem ber mounted for rocking movementupon a fixed part of the frame having a substantially u-,-

shaped frame. pivota'liy fixed thereto and with the arms thereof extending on either side of said driving drum and carrying a wedge at the free end thereof movable into frictional engagement with the drum and package at the bite thereof 5 and inthe direction of rotation'thereof, for insertion between said drum and yarn package, an arm carried at one end by said member and supported at the free end thereofby running contact of the yarn therewith,'said arm and memher being so balanced that upon breaking of the yarn to remove the yarn support from the arm, the arm will move and the member will swing to cause movement of the wedge into frictional engagement with the drum and package to be drawn int the bite thereof by the rotation of the drum and package and separate the same to stop rotation of the package, and additional means carried by said U-shaped frame for engaging a-portion of the machine to movably support the free end of said U-shaped frame in proper position.

6. The combination of a frame for supporting a driving drum, a yarn package normally rotated by frictional contact with said drum, :1 supply of yarn guided to said package, a member mounted 5 for rocking movement upon a. fixed part of the frame and having a substantially U-shaped frame pivotally fixed thereto and with the arms thereof extending on either side of said driving package, anarm carried at one end by said member and supported at the free end thereof by running contact of the yarn therewith, said arm and member being so balanced that upon breaking of the yarn to remove the yarn support from the arm, the arm will move and th member will swing to cause movement of the wedge between the drum and package to stop rotation of the package, and'means carried by, said wedge and 40 engaging a portion of the frame to support the wedge-carrying portion of said U-shaped frame.

7. The combination of astructure for supporting a driving drum, 9. yarn package normally rotated by frictional contact with said drum, 9.

supply .of yarn guided to said package, a member mounted for rocking movement upon a fixed part of the structure and having a substantially U- shaped frame support pivotally fixed thereto and with the arms thereof extending on either side of said driving drum and carrying at the free end thereof a sheet metal wedge for insertion between said dnun and yarn package, an arm carried at one end by said member and supported by running contact. of the yarn with the arm, said arm and member being so balanced that upon breaking of the yarn to remove the yarn, support from the arm, the arm will move and the member will swing to cause movement of the frame and wedge intoa positionbetween the drum and package to stop rotation of the package and means extending from the free ends of the arms of such member into engagement with theishaft of the said driving drum to mov-. ably support the free end of said U-shaped frame 5 in proper position.

- HOWARD W. TAYLOR.

drum and carrying a wedge at the free end theree 30 of for insertion between said drum andyam- 

